Type-writing machine.



Patented Mar. 28

ii w a A c. 3-. concomw. TYPE wmrme MACHINE. APPLICATION ElLED NOV.21,1913.

M m L RAN, a citizen of the r Th1 OORNE LIU S- B. CORCORAN, OF NEW YORK,N. Y., ASSIGNOR TO UNDEItWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y.,A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed November 21, 1913. Serial No. 802,206.

,To all whom it may concern:

Be it known that I, CORNELIUS B. Conco- United States, residing in theborough of Bronx, in the county of New York, city and State ofNeW York,have invented certain new and useful Im provements in Type-WritingMachines, of which the following is a specification.

This invention relates to typewriting machines, and more particularly tothe stop which arrests the type-bars when near the platen, to cause themto spring against the plateii, as shown in the patent 'to Manning No.612,858, dated October 25, 1898.

My object is to overcome certain difficulties experienced with the stop,which was heretofore formed integral with the type-bar segment, andnecessitated adjustingthe type-bars in the individual machine for whichthey were to be used.

With my improved form of stop, which is separate from the type-barsegments, the typebars may be adjusted on a master machine, and then beplaced in individual mastop baclnthe types are is a front plan'wiewchines, in each of whichthe stop may be adjusted to regulate theimpression of the types upon the platen." The invention also has otheradvantages. For the adjustment of this stop, I have provided it with aseries of cams which rest in seats or depressions in an adjusting bar,By shifting the latter, the cams may be forced gradually out of theirseats, or bepermitted to move farther into the same, to bring the.typebar stop into a position where it will arrest the type-bar earlieror later. This adjustment of the stop may also be utilized to quicklyregulate the type impressions, when a larged number of copies are to bemade upon a machine which is normally used for art one or two copies. Bysetting the said harder against the platen. Other objects and advantageswill hereinafter appear. 1

In the accompanying drawings, Figure 1 ot'my invention as applied to thesegmen,t:of'- an Underw'ood type of machine, with against the platen.Fig. 2 is a side elevaution, partly sectional, to illustrate the mannerin which the typdbaris arrested by the stop, and the type sprung against the platen. an enlarged sec? al View of the l. of fastening themeat, showing a lilQtllOt' 'slots 15 in the slide bar,

permitted to strike a type-bar swung stop and slide bar in position.Fig. 4 shows the arrangement of the cams on the rear of the stop. Fig. 5shows the cam seats in h slide bar. Fig. 6 is a detail view, shown themethod of adjusting the stop by fore" the cams out of their seats.

In the usual form of an Underwood ma chine, to which my presentinvention is shown applied, key levers 1 rock bell cranks 2, which swingbars 3 on fulcrunis 4., to strike the types 5 on the outer end of saidbars against a platen 6.

A device 7 is arranged to arrest the type bars 3 just before the typetouches the platen. The type springs against the platen and makes itsimpression.

To regulate the impression of the types, I have provided an adjustmentfor the stop. The stop 7 is formed independently of the type-bar segment8, and preferably com prises a stop portion 9, a body portion 10 andcams 11, which rest on seats 12 in an adjusting slide bar 13. This stepis of a segmental form and is fastened. to the face of the type-barsegment 8 with screws passing through holes in the said stop and topermit the latter to be shifted in the direction of its length while thestop 7 is only movable toward and from the segment, being held againstmove ment in other directions by the screws 14-.

When the device is to be regulated to permit the types to make heavierimpressions, the screws 14 are loosened, and the slide bar 13 is shiftedfrom the Fig. 1 position to the left. This may be done by tapping on theprojection 16. This causes the cam seats to be shifted beneath the cams11, so that when the screws 14. are again tightened, the stop 7 will bedrawn closer to the typebar seg ment 8, because the said cams settlelower in their seats, and permit the bars 3 to come closer to the platenbefore being arrested by the sto If the slide bar is-shifted in theopposite 'mined, the adjustment to determine the character of the impactmust necessarily I always be true. in other words, the stop portion 9will never wiggle or become askew.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.-

Having thus described my invention l 'claim:

' 1. In combination with a typewriting machine segment, a plurality oftype-bars pivoted in the segment, means for swinging any of saidtype-bars independently against a platen, a stop arranged on saidsegment to arrest said type-bars at a certain point of their movement,to cause the type carried thereon to s rin a -ainst the laten a'seriesof cams on said stop and means cooperating with said cams, by meansof which the latter may be adjusted to arrest the typebars sooner orlater in their movement against the platen.

2. In combination with a typewriting ma chine segment, a platen, aplurality of typebars pivoted in the segment, means for swinging any ofsaid type-bars independently toward the platen, a stop arranged on saidsegment to arrest said type-bars at a certainpoint of their movement, tocause the type carried thereon to spring against the platen, a series ofcams on said stop, a bar, and seats for said cams provided in said barwhich may beshifted to gradually force said cams out of said seats or toallow them to sink deeper into the latter, thereby causing the stop toarrest the type bars sooner or later in their swinging movement towardthe platen. I

3, In a typewriting machine, the combination of a platen, swinging typebars and a stop for said type-bars, and a bar for said stop the said barand said stop provided I with cotiperating inclined surfaces to enableadjustment of said step with reference to the bar to be 'edected, andmeans for holding said parts adjusted.

4:. .ln combination with a typewriting machine segment, a platen, aplurality of typebars pivoted in the segment, means for swinging any ofsaid type-bars independently' toward the platen, an adjusting bar, astop provided with cams seated in; depressions in said bar, means forshifting said adjusting bar to adjust said stop and cause it to arrestthe type-bars sooner or later in their swinging movement toward theplaten,

to make a light'or heavy impression of the typecarried on saidtype-bars, and means for securing or looking said stop and bar inposition on said segment when adjusted.

5. In a typewriting machine, the combination with a type-bar segment, ofa set of type-bars pivotally mounted thereon with their pivots arrangedin an arc, the type bars mounted to swing to a common printing center, atwo part arc-shaped stop mountedonthe segment concentrically with saidfirst-mentioned arc in position to inter-.

cept each of the typebars as it nears the printing point and permit thefree end of the type-bars to spring to printing position, a sliding bar,and coijperating means on said bar and stop whereby when the bar is slidthe stop is adjusted.

6. The combination with a support, of type-bars mounted to swing thereonto a common printing center, a stop mounted on the support and extendingtransversely of the type-bars in position to arrest the latter as theynear the printing point, and an adjusting device interposed between thestop and its support and comprising cam means for adjusting the stoprelatively to its support to thereby vary the point at which thetype-bars are arrested.

The combination withtype-bars arranged to swing to a common printingcenter, of a support on which the type-bars are mounted, a stopextending transversely of the type-bars in position to arrest thetypebars as they near the printing position, an adjusting slideinterposed between the stop and said support-and provided with cams formoving the stop to vary the point at which the type-bars are arrested,and meansslide having cooperating cam surfaces, and' .screws extendlngthrough openings provided in the stop and threaded into the segment topermit adjustment of the stop toward and from the face of the segment,but

preventing lateral movement of the stop, said adjusting slide providedwith elongated openings through which the screws extend to permitadjustment of the slide 'over the face of the segment to adjust theposition of the stop, said screws serving to clamp the stop and slide inadjusted position;

10. The combination with a type-bar segment of a set of type-barspivotally mounted thereon, the pivots of the type-bars arranged in anarc, the type-bars providediat their free ends with types arranged toswing to a printing center, an arc-shaped stop concentric with saidfirst-named are and mounted on the segment between the type-loar pivotsand the printing center, in position to arrest the movement of thetype-bars about their pivots as the types approach the printing pointand permit the types to spring to printing position, a slide interposedbetween the type-bar segment andsaid stop and arnanged to slide over theface ofthe typebar segment, said stop and slide formed with cooperatingcam faces to move the stop toward and from the segment as the slide ismember adjustable in planes parallel to itself to vary the stop inposition for all of the type-bars, means for effecting such adjustment,a .tapping projection on said means, and means to lock the stop memberin its adjustable position.

12. The combination with a support, of type-bars mounted to swing insaid support to a common printing center, a stop mounted on saidsupport, and extending transversely of the type-bars in strikingposition for the latter as they approach the printing point, anadjusting device interposed between the stop and its support, cam meanson the stop, cam means on the adjusting support engaging the cam meanson the stop, a tapping projection on said adjusting means whereby thesupport may be adjusted always in planes parallel to itself, and meansfor holding said support in adjusted position.

CORNELIUS B. CORCORAN.

W'itnesses:

F. E. ALEXANDER, TITUS H. Irons.

fiopies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. G.

